Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than previously thought — and may be a big reason that our planet harbors life.

Even from space, you wouldn’t detect something important about Earth’s shape: It’s not perfectly round. It’s actually a ...

Scientists have calculated the Earth to be 4.54 billion years old, with an uncertainty of 50 million years on either side.

If Earth's history were a calendar year, humans would not appear until the last few minutes before midnight on Dec. 31.

Cemeteries not only provide a peaceful place to contemplate and commemorate the dead. They are also great places for studying ...

Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment ...

The Geological Society of America (GSA) proudly announces the acquisition of Mountain Press Publishing Company’s award-winning geology series, Roadside Geology, Geology Underfoot, and Geology Rocks!, ...

Earth surface is covered with rigid plates that ... There are numerous signs of some kind of geologic shift during the Archean Eon (4 billion to 2.5 billion years ago), with estimates of exactly ...

Earth's crust, or the outermost shell of the planet, has drastically changed throughout geologic history, mostly due to the ...

From time to time, when Earth's tectonic plates shift, the planet emits a long, slow belch of carbon dioxide. In a new ...

Geologists found evidence in the way enigmatic sandstones called Tava formed in the Rocky Mountains hundreds of millions of ...